This online slot isn’t the first based on the investigations of Sherlock Holmes but there’s always room for one more, especially if has a progressive jackpot. Holmes and the Stolen Stones is developed by Yggdrasil Gaming and aside from the opportunity to earn big bucks there are some funky bonus features to get to grips with.

Holmes and the Stolen Stones is a five reel slot with three rows and twenty fixed paylines; there’s an appropriately Victorian soundtrack to your gameplay and the scene behind the reels suggests gloomy London alleyways and locked doors.

The four high value symbols are Holmes, Dr. Watson, a bound book and a magnifying glass; lower values are some rather ornate playing card icons – spades, hearts, diamonds and clubs.

There is no wild here but there are two bonus symbols which are a blue ‘Bonus’ keyhole and a gold ‘Free Spins’ keyhole.

Bonus Features

Free Spins

There are two ways to trigger the free spins round:

Land three or more of the Free Spins scatter symbols anywhere in view.

Collect five matching shards to fill up one one of the meters above the reels.

Either way you will receive ten free spins but if it’s triggered by the shards one of the that colour will pre-populate the area above the reels. This is important because collecting five similarly-coloured shards will award that particular progressive jackpot.

Bonus Game

This is triggered by landing three or more of the blue keyhole scatter symbols anywhere on the reels and you will be taken to a warehouse in which there is a large stack of boxes. All you have to do is pick them until you find the smoke bomb which ends the feature. You can find:

Cash prizes

Diamond shards which are transferred to the base game when the bonus ends.

Verdict

Holmes and the Stolen Stones uses a pleasing graphical style and sound effects which complement the theme very well. It seems very easy to trigger the various features which is always a plus and there’s a nice high RTP of 96.80%.